First solar cell with a quantum efficiency greater than 100 percents

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POSTER: computer news   ||   FIRST SOLAR CELL WITH A QUANTUM EFFICIENCY GREATER THAN 100 PERCENTS	DATE:2011-12-19
Scientists from the National Renewable Energy Laboratory (NREL) managed to create the first solar cell with a quantum efficiency of more than 100%. Quantum efficiency is the ratio of electrons number that have arisen in the chain of the solar cell to the number of photons of a certain wavelength.  Given that a high-energy photon could knock out a few electrons, the quantum efficiency can exceed 100%. NREL specialists managed to get 114% rate. The key to success, according to scientists, was the use of multi-exciton generation effect, in which one absorbed photon creates a single pair of electron-hole.   The researchers hope that their development in the future will lead to solar panels that produce electricity that could cost competitive with electricity from other sources. Related Products :

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